<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea placeholder="请输入内容" maxlength="120" v-model="msg"></textarea>
        <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>

        <div class="cmt-list">
            <div class="cmt-item" v-for="(item, i ) in comments" :key="item.add_time">
                <div class="cmt-title">
                    第{{i+1}}楼&nbsp;&nbsp;用户：{{item.user_name}}&nbsp;&nbsp;发表时间：{{item.add_time|dateFormat}}
                </div>
                <div class="cmt-body">
                    {{item.content==='undefined' ? '此用户很懒，嘛都没说':item.content}}
                </div>
            </div>
        </div>


        <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
    </div>
</template>
<script>
import { Toast } from "mint-ui";
export default {
    data(){
        return{
            pageIndex:1,
            comments:[],
            msg:''
        }
    },
    created(){
        this.getComments();
        //  console.log(this.id);
        //  console.log(this.$route.params.id);
    },
    methods:{
        getComments(){
            this.$http.get("api/getcomments/" + this.id + "?pageindex=" +  
            this.pageIndex).then(result=>{
                if(result.body.status===0){
                    // this.comments = result.body.message;
                    this.comments = this.comments.concat(result.body.message);
                }else{
                    Toast("获取失败")
                }
            })
        },
        getMore(){
            this.pageIndex++;
            this.getComments();
        },
        postComment(){
            if(this.msg.trim().length === 0){
                return Toast('评论内容不能为空')
            }
            this.$http.post('api/postcomment/' + this.$route.params.id, {
                content:this.msg.trim()
                })
                .then(function(result){
                    if(result.body.status===0){
                        var cmt={
                            user_name:'匿名用户',
                            add_time:Date.now(),
                            content:this.msg.trim()
                            };
                        this.comments.unshift(cmt);
                        this.msg = "";
                    }
                })
        }
    },
    props:["id"]
}
</script>
<style lang="scss" scoped>
.cmt-container{
    h3{
        font-size: 18px;
    }
    textarea{
        font-size: 14px;
        height: 85px;
        margin: 0;
    }
    .cmt-list{
        margin: 5px 0;
        .cmt-item{
            .cmt-title{
                line-height: 30px;
                background-color: #ccc;
            }
            .cmt-body{
                line-height: 35px;
                text-indent: 2em;
            }
        }
    }
}
</style>

